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PATENTED 4 MAR "3 i868 vfwzdlup'yls Imp? mangimi/wer.

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Lener@ Paten: No. 74,997, dan.: Mart-'h' s, 186s.

IMPROVEMENT IN FLOATIN G THEBMOMETERS.

@itt .Srlnhule :stemt lu in time tsttets @anni :mh linking puri nf the sami.

To ALL wHoM 1T MAY coNoERN: v

Be it known that I, DAVID B. DAY, of New York,v in the county of New York, und State of New York, hxwe invented n new and improved Floating Thermometer; and Ido hereby declaro that the following is n. full,

clear, and exactdescription thereof, which will enable those slrilled in the art to malte nml use the same, refer-i ence Being had to the accompanying drawings, forming part of this specification, 'in which.- Fignre 1 is plan view of my invention', and I Figuro2 is a-vertcallongitudinal section of the same, taken in the line :c x, tig. 1.

Figure 3 is a crossseotion, taken inthe line yy, fig. 2. i l Similar lettersof reference indicate corresponding parte in all the figures.

trouble of inserting and removing the thermometer at each observation, and agitating it about .until the temperature ofthe milk has been imparted to the mercury.

Ilflconstrnct my iooting thermometer us follows: -A wooden lioat, A, is provided, and a vertical hole, a,

bored through it. The thermometer-tube B is then'hent near its bulb, b, (tig. 2,) so that thelbulb may occupy the hole or cavity afand extend downward into the.- milk, whilethe tube B lies ilnt on the upper side of the Boat. By this means the bulb of the thermometer is immersed in the milk, while the tube lies horizontally or ia the best position forobservatin. In Athe bottom of' tho block or iloat A is a groove, c c, fig. 2, in which slides o weight, D, to so .regulate the Weight of thjloat as to make it set level in lthe liquid. This weight D may be made heavier, so that by sliding'it to the bulb-cnil oi'xhc hlock the iioat und thermometer will take up an inclined position, if desired. In cases wher'chcnvy kinds of wood, ivhieh will taken fine finish, are employed for the float, I increase the buoyancy ofthe blocks by boringlwles e e, iig. 3, longitudinally in each side of the block, and nearly through its entire length, and then plug up the mouths of the holes 'with a like quality of wood. This thermometer may he employed in cheese-making, and also tcr measuring the temperature of liquors and other liquids; V I

.I do-not confine myself` to this particular construction of float, as any suitable material or construction may be employed; nor do I confine myself to n reclining thermometer, as they uiny be inu'de to stand vertically in the fluid like a lactometer. l l

Having thusdescribed my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. I claim theoat A, bent thermometer-tube B, and adjustable ballast-weight D, constructcdnnd com- Lined substantially as und for the purpose herein set forth. "l

2. Iclaim u`tl1ermometerfor measuring the temperature of liquids, so constructed ns to be suspended therein by means afa float making n. part' of the instrument, substantially in the manner and for the purpose set forth.

DAVID B. DAY.

Witnesses.

HARRY Mosnnnr, F. A. MonLsY. 

